package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // md5加密成功
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }


    /**
     * 新增牛马
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {

        System.out.println("当前线程的id" + Thread.currentThread().getId());
        Employee employee = new Employee();


        //使用对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //设置账号状态 1 为正常 2 为锁定
        employee.setStatus(StatusConstant.ENABLE);

        //设置密码 默认为123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

/*        //设置创建和更新时间
        // @JsonFormat(pattern = )
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());


        //设置创建人 更新人
        // 补全完成
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());*/


        employeeMapper.insert(employee);
    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO){
        //select * from employee limit 0,10
        //开始分页查询

        //这是PageHelper提供的静态方法，用于设置分页参数，用于设置分页参数，
        //调用这个方法后，接下来的第一个数据库查询将自动被分页处理
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        // 调用 Mapper 的分页查询方法
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        // 获取总记录数
        long total = page.getTotal();

        // 获取当前页的记录列表
        List<Employee> records = page.getResult();

        // 将结果封装到 PageResult 对象中并返回
        return new PageResult(total, records);
    }

    public  void startOrStop(Integer status, long id){
        //update employee set status =? where id =?

/*        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);*/

        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();


        employeeMapper.update(employee);

    }

    public Employee getById(long id){
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("******");
        return employee;
    }


    public void update(EmployeeDTO employeeDTO){
        Employee employee = new  Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

/*        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        employeeMapper.update(employee);
    }

}
